Nonstop flight route between Tiree, Scotland, United Kingdom and Atwater, California, United States:
Departure Airport:

Arrival Airport:

Distance from TRE to MER:
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- About this route
- TRE Airport Information
- MER Airport Information
- Facts about TRE
- Facts about MER
- Map of Nearest Airports to TRE
- List of Nearest Airports to TRE
- Map of Furthest Airports from TRE
- List of Furthest Airports from TRE
- Map of Nearest Airports to MER
- List of Nearest Airports to MER
- Map of Furthest Airports from MER
- List of Furthest Airports from MER
About this route:
A direct, nonstop flight between Tiree Airport (TRE), Tiree, Scotland, United Kingdom and Castle Airport (MER), Atwater, California, United States would travel a Great Circle distance of 4,887 miles (or 7,865 kilometers).
A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between Tiree Airport and Castle Airport, the route shown on this map most likely appears curved because of this reason.
Try it at home! Get a globe and tightly lay a string between Tiree Airport and Castle Airport. You'll see that it will travel the same route of the red line on this map!
Departure Airport Information:
IATA / ICAO Codes: | TRE / EGPU |
Airport Name: | Tiree Airport |
Location: | Tiree, Scotland, United Kingdom |
GPS Coordinates: | 56°29'57"N by 6°52'9"W |
Operator/Owner: | Highlands and Islands Airports Limited |
Airport Type: | Public |
Elevation: | 38 feet (12 meters) |
# of Runways: | 3 |
View all routes: | Routes from TRE |
More Information: | TRE Maps & Info |
Arrival Airport Information:
IATA / ICAO Codes: | MER / KMER |
Airport Name: | Castle Airport |
Location: | Atwater, California, United States |
GPS Coordinates: | 37°22'50"N by 120°34'5"W |
Operator/Owner: | Merced County Department of Commerce, Aviation, and Economic Development |
Airport Type: | Public |
Elevation: | 191 feet (58 meters) |
# of Runways: | 1 |
View all routes: | Routes from MER |
More Information: | MER Maps & Info |
Facts about Tiree Airport (TRE):
- Because of Tiree Airport's relatively low elevation of 38 feet, planes can take off or land at Tiree Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
- Tiree Airport (TRE) has 3 runways.
- The closest airport to Tiree Airport (TRE) is Coll Island Airport (COL), which is located only 12 miles (19 kilometers) NE of TRE.
- The furthest airport from Tiree Airport (TRE) is Ryan's Creek Aerodrome (SZS), which is located 11,740 miles (18,894 kilometers) away in Stewart Island, New Zealand.
- Tiree Airport is located 2.5 nautical miles north northeast of Balemartine on the island of Tiree in the Inner Hebrides off the west coast of Scotland.
Facts about Castle Airport (MER):
- Castle Airport covers an area of 1,360 acres which contains one runway with an 11,802 x 150 ft asphalt and concrete pavement.
- The furthest airport from Castle Airport (MER) is Tôlanaro Airport (FTU), which is located 11,312 miles (18,204 kilometers) away in Tôlanaro, Madagascar.
- Castle Airport (MER) currently has only 1 runway.
- The closest airport to Castle Airport (MER) is Merced Regional Airport (MCE), which is located only 7 miles (12 kilometers) SSE of MER.
- With its central location in the San Joaquin Valley, on the route of the proposed California High-Speed Rail system, and with a large, underdeveloped site, Castle Airport has been submitted as a possible location for the central maintenance facility for the system.
- Castle Airport is a public use airport located seven nautical miles northwest of the central business district of Merced, a city in Merced County, California, United States.
- Because of Castle Airport's relatively low elevation of 191 feet, planes can take off or land at Castle Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.